Can You Take Magnesium While Pregnant? Dietitian Explained

Why Your Body Needs More Magnesium During Pregnancy

Magnesium during pregnancy plays a critical role in supporting overall prenatal nutrition and ensuring healthy fetal development. This essential mineral is involved in over 300 enzymatic reactions in the body, and during pregnancy, your body’s demand increases significantly.

According to the NIH Office of Dietary Supplements, the Recommended Dietary Allowance (RDA) for pregnant women is around 350–360 mg per day, slightly higher than for non-pregnant women. Organizations like the American College of Obstetricians and Gynecologists (ACOG) also emphasize the importance of adequate nutrient intake throughout pregnancy.

Magnesium supports your baby’s developing bones, tissues, and nervous system, while also helping regulate blood sugar levels and muscle function. However, magnesium deficiency in pregnancy is more common than many realize and may contribute to symptoms like muscle tension, poor sleep, and fatigue.

Many prenatal vitamins contain minimal magnesium—often only 30–50 mg—which may not be enough to meet daily needs. Even with a healthy diet rich in leafy greens, nuts, and seeds, it can be difficult to reach optimal levels, especially in early pregnancy when nausea affects appetite. If you’re curious about the broader role of this mineral, check out our guide to magnesium benefits.

Is Magnesium Safe During Pregnancy? What to Know Before You Start

A common question is: is magnesium safe during pregnancy? In general, yes—magnesium is an essential mineral and is considered safe when taken within recommended limits.

The NIH sets the upper limit for supplemental magnesium at 350 mg per day. Exceeding this may lead to side effects like diarrhea or nausea.

Women with kidney conditions should be especially cautious, as magnesium is regulated through the kidneys. Additionally, magnesium can interact with certain medications, including some antibiotics, so it’s important to discuss supplementation with your healthcare provider.

Be mindful of supplement quality. Some “calm” magnesium powders or blends may include added ingredients that haven’t been evaluated for pregnancy safety. If you’re curious about this, read our guide on is calm magnesium safe for pregnancy.

For a deeper look at potential reactions, see our article on magnesium side effects.

What Is Magnesium Glycinate?

So, you must've come across magnesium glycinate while researching supplements for your pregnancy journey, and questions like "can I take magnesium glycinate while pregnant" are swirling in your mind.

Let's delve deeper into this specific type of magnesium and understand its properties.

Magnesium glycinate is a mineral supplement that combines magnesium with glycine, an amino acid known for its roles in neurotransmission and protein synthesis. This pairing creates a chelated form of magnesium, meaning the magnesium is bound to glycine.

Advertisement

This chelation process is believed to improve absorption compared to other magnesium supplements, potentially making it a gentler option for those who experience digestive side effects, such as diarrhea, commonly associated with magnesium citrate, another popular form.

While both magnesium glycinate and magnesium citrate can be helpful during pregnancy, they have some key differences. Magnesium citrate is known for its laxative effects, making it a good choice for relieving constipation.

However, this laxative effect might be unwanted for some pregnant women. On the other hand, magnesium glycinate is generally considered gentler on the digestive system and might be a better choice for those concerned about potential side effects.

Ultimately, the best form of magnesium for you during pregnancy depends on your individual needs and how your body reacts. It's crucial to discuss your options with your healthcare provider to determine if magnesium supplementation is right for you and, if so, which type might be most beneficial.

They can also address any concerns you may have about magnesium glycinate and safety during pregnancy.

Benefits of Magnesium During Pregnancy

As mentioned earlier, magnesium is a powerful mineral that supports numerous bodily functions during pregnancy.

It contributes to maintaining healthy blood pressure, regulating muscle and nerve function, and even promoting fetal development. Studies suggest sufficient magnesium levels may be linked to a reduced risk of preeclampsia, a serious pregnancy complication, and are often prescribed for treating preeclampsia symptoms.

Additionally, magnesium can help alleviate some common pregnancy discomforts like constipation, leg cramps, and trouble sleeping, all of which can significantly impact your quality of life.

Now, let's explore the specific benefits of magnesium glycinate for pregnant women:

• Enhanced Absorption: Because it's chelated with glycine, magnesium glycinate boasts a potentially higher absorption rate compared to other forms of magnesium. This enhanced bioavailability means your body can utilize the magnesium more effectively. This is particularly important during pregnancy when your body's demands are increased.
• Calming Properties: The presence of glycine in magnesium glycinate offers an additional advantage. Glycine is an amino acid with calming properties, and some research suggests it may contribute to the relaxing effects associated with magnesium glycinate. This can be especially helpful for pregnant women experiencing anxiety or trouble sleeping.

Read More: Magnesium for sleep during pregnancy

However, it's important to remember that more research is needed to definitively determine the effectiveness of magnesium glycinate for all pregnancy-related concerns.

Abby Grimm, a Registered Dietitian,

highlights that cramping is common in pregnant women, particularly in early pregnancy. She suggests that magnesium can aid muscle pain and fulfill the heightened mineral requirements during pregnancy. Additionally, Grimm notes that pregnant women often experience a decline in sleep quality due to hormonal fluctuations. To alleviate fatigue and insomnia, she recommends taking WOWMD Magnesium Glycinate before bed, as it can soothe the nervous system and muscles, promoting more restful sleep.

If you're wondering "can I take magnesium glycinate while pregnant" to address specific issues, consulting your healthcare provider is crucial. They can assess your individual needs and advise on the appropriate dosage and potential interactions with any medications you're taking.

How Much Magnesium Should You Take During Pregnancy?

If you’re wondering how much magnesium during pregnancy is appropriate, the answer depends on your diet, supplement intake, and individual needs.

The NIH recommends a daily intake of 350–360 mg for pregnant women. However, since most prenatal vitamins provide only a small portion of this, many women consider adding a magnesium supplement during pregnancy.

A typical supplemental range is around 100–350 mg of elemental magnesium per day. It’s best to start with a lower dose and increase gradually, depending on how your body responds.

You may also wonder: is 500 mg of magnesium safe during pregnancy? The Tolerable Upper Intake Level (UL) for supplemental magnesium is set at 350 mg per day. Higher amounts should only be taken under medical supervision.

Timing can also make a difference. Many women prefer taking magnesium in the evening, as it aligns with relaxation and sleep support benefits—especially useful during third trimester supplementation.

When choosing a product, pay close attention to “elemental magnesium” on the label. This reflects the actual active magnesium content, not the total compound weight.

If you’re exploring options, magnesium glycinate is a popular choice due to its gentle nature and absorption. Learn more about it here: magnesium glycinate.

Always consult your OB/GYN or midwife before starting any supplement.

Research & Studies Related To Pregnancy & Intake Of Magnesium

While large-scale clinical trials specifically on magnesium glycinate during pregnancy are still needed, emerging research suggests its potential to support a healthy pregnancy by addressing common concerns and potentially improving maternal health outcomes.

• Improved Magnesium Status: A review published by the National Institutes of Health , titled Magnesium in Pregnancy, explores the link between magnesium deficiency and adverse pregnancy outcomes.The study highlights that many pregnant women, particularly those from disadvantaged backgrounds, often have inadequate magnesium intake. This deficiency has been linked to an increased risk of preeclampsia and low birth weight.
• Potential Benefits on Preeclampsia: A meta-analysis of RCTs showed that magnesium supplementation reduced preeclampsia, particularly in high-risk women. The findings suggest that magnesium supplementation, particularly in high-risk pregnancies, may be beneficial in reducing the risk of this serious pregnancy complication.

It's important to note that these studies do not specifically focus on magnesium glycinate, but rather on magnesium supplementation in general. However, the enhanced absorption rate of magnesium glycinate supplement makes it a promising option for pregnant women who may struggle to absorb other forms of magnesium.

In comparison, studies on magnesium citrate, a commonly used alternative, have primarily focused on its laxative effects. While this can be helpful for constipation relief during pregnancy, it may not be ideal for everyone. Additionally, some research suggests that magnesium citrate may have a lower bioavailability compared to magnesium glycinate.

These comparisons highlight the potential advantages of magnesium glycinate for its targeted benefits and potentially better absorption during pregnancy.

However, consulting with your healthcare provider is crucial to determine if magnesium supplementation, including magnesium glycinate, is right for you and to discuss the most appropriate form and dosage based on your individual needs.

Expert Advice On Consumption of Magnesium During Pregnancy

Magnesium is an essential mineral that plays a crucial role in over 300 bodily functions, including muscle and nerve function, blood sugar control, and blood pressure regulation.

Research suggests that a sufficient magnesium intake during pregnancy can offer various benefits for both the mother and the baby. However, it's important to consider individual needs and consult a healthcare professional before taking any supplements.

Benefits of Magnesium During Pregnancy:

• Reduced Risk of Preeclampsia: A severe pregnancy complication characterized by high blood pressure. Studies have shown that magnesium supplementation may help lower the risk.
• Improved Sleep: Magnesium glycinate is known to promote relaxation and better sleep, which can be a challenge during pregnancy.
• Reduced Muscle Cramps: Leg cramps are a common complaint during pregnancy, and magnesium may help alleviate them.

Age Considerations and Daily Magnesium Needs:

The recommended daily allowance (RDA) for magnesium varies depending on age and pregnancy status. Here's a general guideline:

• Women Age 19-30: 310mg/day
• Women Age 31 and Over: 320mg/day
• Pregnant Women: 350-400 mg/day

Magnesium Glycinate for Pregnancy:

Magnesium glycinate is a well-absorbed and generally well-tolerated form of magnesium. It may be a suitable option for pregnant women due to its gentler effects on the digestive system compared to other forms, such as magnesium citrate.

Important Considerations:

• Consult a Healthcare Professional: Before taking any magnesium supplements during pregnancy, talk to your doctor. They can assess your individual needs, and potential interactions with medications, and determine the appropriate dosage.
• Dietary Sources: Magnesium can be obtained from a healthy diet rich in leafy green vegetables, nuts, seeds, whole grains, and legumes.

Which Magnesium Is Best for Pregnancy? Glycinate, Citrate, and More

Choosing the best magnesium for pregnancy depends on your needs, tolerance, and goals.

Magnesium glycinate is often considered the top choice. It’s a chelated form, meaning it’s bound to the amino acid glycine, which enhances absorption and provides a calming effect. This form has high bioavailability of magnesium and is gentle on the digestive system, making it ideal for daily use.

Magnesium citrate is another well-absorbed form, commonly used to support digestion and relieve pregnancy constipation. However, it may cause loose stools if taken in higher doses.

Magnesium oxide, on the other hand, has relatively low absorption and is often used primarily as a laxative. It’s not typically recommended for regular supplementation during pregnancy.

You may also see magnesium bisglycinate, a closely related form to glycinate, offering similar benefits in terms of absorption and tolerability.

When evaluating prenatal supplements, look for clearly labeled elemental magnesium, third-party testing, and minimal additives. Avoid blends with herbs or proprietary ingredients not evaluated for pregnancy safety.

If you’re interested in highly absorbable forms, explore chelated magnesium. For digestive support, magnesium citrate may be helpful. Some women also prefer topical options like magnesium lotion for muscle support without affecting digestion.

Support Your Pregnancy with the Right Magnesium Supplement

Magnesium during pregnancy is a key part of supporting both your health and your baby’s development. While many women fall short of recommended intake, the right supplement—especially magnesium glycinate—can help bridge the gap.

A balanced approach that includes nutrient-rich foods, proper prenatal care, and high-quality prenatal magnesium can make a meaningful difference. WOWMD offers science-backed, expert-recommended magnesium supplements made in the USA to support your wellness journey during and after pregnancy.

If you’re ready to explore your options, browse our magnesium glycinate collection to find a clean, pregnancy-friendly fit.

Disclaimer: Individual results may vary. Supplements are not intended to diagnose, treat, cure, or prevent any disease. Always consult your OB/GYN, midwife, or healthcare provider before starting any supplement regimen during pregnancy.